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<title>class Test::Unit::Diff::SequenceMatcher - test-unit: Ruby Standard Library Documentation</title>


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    <li ><a href="#method-c-new">::new</a>
    <li ><a href="#method-i-adjust_best_info_with_junk_predicate">#adjust_best_info_with_junk_predicate</a>
    <li ><a href="#method-i-blocks">#blocks</a>
    <li ><a href="#method-i-compute_blocks">#compute_blocks</a>
    <li ><a href="#method-i-compute_matches">#compute_matches</a>
    <li ><a href="#method-i-compute_operations">#compute_operations</a>
    <li ><a href="#method-i-compute_ratio">#compute_ratio</a>
    <li ><a href="#method-i-determine_tag">#determine_tag</a>
    <li ><a href="#method-i-expand_edge_equal_operations-21">#expand_edge_equal_operations!</a>
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    <main role="main" aria-labelledby="class-Test::Unit::Diff::SequenceMatcher">
    <h1 id="class-Test::Unit::Diff::SequenceMatcher" class="class">
      class Test::Unit::Diff::SequenceMatcher
    </h1>

    <section class="description">
    
    </section>

      <section id="5Buntitled-5D" class="documentation-section">





                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(from, to, &amp;junk_predicate)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 13</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">from</span>, <span class="ruby-identifier">to</span>, <span class="ruby-operator">&amp;</span><span class="ruby-identifier">junk_predicate</span>)
  <span class="ruby-ivar">@from</span> = <span class="ruby-identifier">from</span>
  <span class="ruby-ivar">@to</span> = <span class="ruby-identifier">to</span>
  <span class="ruby-ivar">@junk_predicate</span> = <span class="ruby-identifier">junk_predicate</span>
  <span class="ruby-identifier">update_to_indexes</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-blocks" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">blocks</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="blocks-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 34</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">blocks</span>
  <span class="ruby-ivar">@blocks</span> <span class="ruby-operator">||=</span> <span class="ruby-identifier">compute_blocks</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-grouped_operations" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">grouped_operations</span><span
                                class="method-args">(context_size=nil)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="grouped_operations-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 42</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">grouped_operations</span>(<span class="ruby-identifier">context_size</span>=<span class="ruby-keyword">nil</span>)
  <span class="ruby-identifier">context_size</span> <span class="ruby-operator">||=</span> <span class="ruby-value">3</span>
  <span class="ruby-identifier">_operations</span> = <span class="ruby-identifier">operations</span>.<span class="ruby-identifier">dup</span>
  <span class="ruby-identifier">_operations</span> = [[<span class="ruby-value">:equal</span>, <span class="ruby-value">0</span>, <span class="ruby-value">0</span>, <span class="ruby-value">0</span>, <span class="ruby-value">0</span>]] <span class="ruby-keyword">if</span> <span class="ruby-identifier">_operations</span>.<span class="ruby-identifier">empty?</span>
  <span class="ruby-identifier">expand_edge_equal_operations!</span>(<span class="ruby-identifier">_operations</span>, <span class="ruby-identifier">context_size</span>)

  <span class="ruby-identifier">group_window</span> = <span class="ruby-identifier">context_size</span> <span class="ruby-operator">*</span> <span class="ruby-value">2</span>
  <span class="ruby-identifier">groups</span> = []
  <span class="ruby-identifier">group</span> = []
  <span class="ruby-identifier">_operations</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">tag</span>, <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span><span class="ruby-operator">|</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">tag</span> <span class="ruby-operator">==</span> <span class="ruby-value">:equal</span> <span class="ruby-keyword">and</span> <span class="ruby-identifier">from_end</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">from_start</span> <span class="ruby-operator">&gt;</span> <span class="ruby-identifier">group_window</span>
      <span class="ruby-identifier">group</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">tag</span>,
                <span class="ruby-identifier">from_start</span>,
                [<span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">from_start</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">min</span>,
                <span class="ruby-identifier">to_start</span>,
                [<span class="ruby-identifier">to_end</span>, <span class="ruby-identifier">to_start</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">min</span>]
      <span class="ruby-identifier">groups</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">group</span>
      <span class="ruby-identifier">group</span> = []
      <span class="ruby-identifier">from_start</span> = [<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">max</span>
      <span class="ruby-identifier">to_start</span> = [<span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">max</span>
    <span class="ruby-keyword">end</span>
    <span class="ruby-identifier">group</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">tag</span>, <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span>]
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">groups</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">group</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">group</span>.<span class="ruby-identifier">empty?</span>
  <span class="ruby-identifier">groups</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-longest_match" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">longest_match</span><span
                                class="method-args">(from_start, from_end, to_start, to_end)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="longest_match-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 20</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">longest_match</span>(<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span>)
  <span class="ruby-identifier">best_info</span> = <span class="ruby-identifier">find_best_match_position</span>(<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>,
                                       <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span>)
  <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@junks</span>.<span class="ruby-identifier">empty?</span>
    <span class="ruby-identifier">args</span> = [<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span>]
    <span class="ruby-identifier">best_info</span> = <span class="ruby-identifier">adjust_best_info_with_junk_predicate</span>(<span class="ruby-keyword">false</span>, <span class="ruby-identifier">best_info</span>,
                                                     <span class="ruby-operator">*</span><span class="ruby-identifier">args</span>)
    <span class="ruby-identifier">best_info</span> = <span class="ruby-identifier">adjust_best_info_with_junk_predicate</span>(<span class="ruby-keyword">true</span>, <span class="ruby-identifier">best_info</span>,
                                                     <span class="ruby-operator">*</span><span class="ruby-identifier">args</span>)
  <span class="ruby-keyword">end</span>

  <span class="ruby-identifier">best_info</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-operations" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">operations</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="operations-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 38</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">operations</span>
  <span class="ruby-ivar">@operations</span> <span class="ruby-operator">||=</span> <span class="ruby-identifier">compute_operations</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-ratio" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">ratio</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="ratio-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 69</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">ratio</span>
  <span class="ruby-ivar">@ratio</span> <span class="ruby-operator">||=</span> <span class="ruby-identifier">compute_ratio</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="private-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Private Instance Methods</h3>
                </header>

                  <div id="method-i-adjust_best_info_with_junk_predicate" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">adjust_best_info_with_junk_predicate</span><span
                                class="method-args">(should_junk, best_info, from_start, from_end, to_start, to_end)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="adjust_best_info_with_junk_predicate-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 117</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">adjust_best_info_with_junk_predicate</span>(<span class="ruby-identifier">should_junk</span>, <span class="ruby-identifier">best_info</span>,
                                         <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>,
                                         <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span>)
  <span class="ruby-identifier">best_from</span>, <span class="ruby-identifier">best_to</span>, <span class="ruby-identifier">best_size</span> = <span class="ruby-identifier">best_info</span>
  <span class="ruby-keyword">while</span> <span class="ruby-identifier">best_from</span> <span class="ruby-operator">&gt;</span> <span class="ruby-identifier">from_start</span> <span class="ruby-keyword">and</span> <span class="ruby-identifier">best_to</span> <span class="ruby-operator">&gt;</span> <span class="ruby-identifier">to_start</span> <span class="ruby-keyword">and</span>
      (<span class="ruby-identifier">should_junk</span> <span class="ruby-operator">?</span>
       <span class="ruby-ivar">@junks</span>.<span class="ruby-identifier">has_key?</span>(<span class="ruby-ivar">@to</span>[<span class="ruby-identifier">best_to</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>]) <span class="ruby-operator">:</span>
       <span class="ruby-operator">!</span><span class="ruby-ivar">@junks</span>.<span class="ruby-identifier">has_key?</span>(<span class="ruby-ivar">@to</span>[<span class="ruby-identifier">best_to</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>])) <span class="ruby-keyword">and</span>
      <span class="ruby-ivar">@from</span>[<span class="ruby-identifier">best_from</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>] <span class="ruby-operator">==</span> <span class="ruby-ivar">@to</span>[<span class="ruby-identifier">best_to</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>]
    <span class="ruby-identifier">best_from</span> <span class="ruby-operator">-=</span> <span class="ruby-value">1</span>
    <span class="ruby-identifier">best_to</span> <span class="ruby-operator">-=</span> <span class="ruby-value">1</span>
    <span class="ruby-identifier">best_size</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-keyword">while</span> <span class="ruby-identifier">best_from</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">best_size</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">from_end</span> <span class="ruby-keyword">and</span>
      <span class="ruby-identifier">best_to</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">best_size</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">to_end</span> <span class="ruby-keyword">and</span>
      (<span class="ruby-identifier">should_junk</span> <span class="ruby-operator">?</span>
       <span class="ruby-ivar">@junks</span>.<span class="ruby-identifier">has_key?</span>(<span class="ruby-ivar">@to</span>[<span class="ruby-identifier">best_to</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">best_size</span>]) <span class="ruby-operator">:</span>
       <span class="ruby-operator">!</span><span class="ruby-ivar">@junks</span>.<span class="ruby-identifier">has_key?</span>(<span class="ruby-ivar">@to</span>[<span class="ruby-identifier">best_to</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">best_size</span>])) <span class="ruby-keyword">and</span>
      <span class="ruby-ivar">@from</span>[<span class="ruby-identifier">best_from</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">best_size</span>] <span class="ruby-operator">==</span> <span class="ruby-ivar">@to</span>[<span class="ruby-identifier">best_to</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">best_size</span>]
    <span class="ruby-identifier">best_size</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
  <span class="ruby-keyword">end</span>

  [<span class="ruby-identifier">best_from</span>, <span class="ruby-identifier">best_to</span>, <span class="ruby-identifier">best_size</span>]
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-compute_blocks" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">compute_blocks</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="compute_blocks-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 173</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">compute_blocks</span>
  <span class="ruby-identifier">blocks</span> = []
  <span class="ruby-identifier">current_from_index</span> = <span class="ruby-identifier">current_to_index</span> = <span class="ruby-identifier">current_size</span> = <span class="ruby-value">0</span>
  <span class="ruby-identifier">matches</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">from_index</span>, <span class="ruby-identifier">to_index</span>, <span class="ruby-identifier">size</span><span class="ruby-operator">|</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">current_from_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">current_size</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">from_index</span> <span class="ruby-keyword">and</span>
        <span class="ruby-identifier">current_to_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">current_size</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">to_index</span>
      <span class="ruby-identifier">current_size</span> <span class="ruby-operator">+=</span> <span class="ruby-identifier">size</span>
    <span class="ruby-keyword">else</span>
      <span class="ruby-keyword">unless</span> <span class="ruby-identifier">current_size</span>.<span class="ruby-identifier">zero?</span>
        <span class="ruby-identifier">blocks</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">current_from_index</span>, <span class="ruby-identifier">current_to_index</span>, <span class="ruby-identifier">current_size</span>]
      <span class="ruby-keyword">end</span>
      <span class="ruby-identifier">current_from_index</span> = <span class="ruby-identifier">from_index</span>
      <span class="ruby-identifier">current_to_index</span> = <span class="ruby-identifier">to_index</span>
      <span class="ruby-identifier">current_size</span> = <span class="ruby-identifier">size</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">unless</span> <span class="ruby-identifier">current_size</span>.<span class="ruby-identifier">zero?</span>
    <span class="ruby-identifier">blocks</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">current_from_index</span>, <span class="ruby-identifier">current_to_index</span>, <span class="ruby-identifier">current_size</span>]
  <span class="ruby-keyword">end</span>

  <span class="ruby-identifier">blocks</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-ivar">@from</span>.<span class="ruby-identifier">size</span>, <span class="ruby-ivar">@to</span>.<span class="ruby-identifier">size</span>, <span class="ruby-value">0</span>]
  <span class="ruby-identifier">blocks</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-compute_matches" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">compute_matches</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="compute_matches-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 147</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">compute_matches</span>
  <span class="ruby-identifier">matches</span> = []
  <span class="ruby-identifier">queue</span> = [[<span class="ruby-value">0</span>, <span class="ruby-ivar">@from</span>.<span class="ruby-identifier">size</span>, <span class="ruby-value">0</span>, <span class="ruby-ivar">@to</span>.<span class="ruby-identifier">size</span>]]
  <span class="ruby-keyword">until</span> <span class="ruby-identifier">queue</span>.<span class="ruby-identifier">empty?</span>
    <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span> = <span class="ruby-identifier">queue</span>.<span class="ruby-identifier">pop</span>
    <span class="ruby-identifier">match</span> = <span class="ruby-identifier">longest_match</span>(<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>)
    <span class="ruby-identifier">match_from_index</span>, <span class="ruby-identifier">match_to_index</span>, <span class="ruby-identifier">size</span> = <span class="ruby-identifier">match</span>
    <span class="ruby-keyword">unless</span> <span class="ruby-identifier">size</span>.<span class="ruby-identifier">zero?</span>
      <span class="ruby-keyword">if</span> <span class="ruby-identifier">from_start</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">match_from_index</span> <span class="ruby-keyword">and</span>
          <span class="ruby-identifier">to_start</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">match_to_index</span>
        <span class="ruby-identifier">queue</span>.<span class="ruby-identifier">push</span>([<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">match_from_index</span>,
                    <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">match_to_index</span>])
      <span class="ruby-keyword">end</span>
      <span class="ruby-identifier">matches</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">match</span>
      <span class="ruby-keyword">if</span> <span class="ruby-identifier">match_from_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">size</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">from_end</span> <span class="ruby-keyword">and</span>
          <span class="ruby-identifier">match_to_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">size</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">to_end</span>
        <span class="ruby-identifier">queue</span>.<span class="ruby-identifier">push</span>([<span class="ruby-identifier">match_from_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">size</span>, <span class="ruby-identifier">from_end</span>,
                    <span class="ruby-identifier">match_to_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">size</span>, <span class="ruby-identifier">to_end</span>])
      <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">matches</span>.<span class="ruby-identifier">sort_by</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span>(<span class="ruby-identifier">from_index</span>, <span class="ruby-identifier">_</span>, <span class="ruby-identifier">_</span>)<span class="ruby-operator">|</span>
    <span class="ruby-identifier">from_index</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-compute_operations" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">compute_operations</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="compute_operations-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 197</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">compute_operations</span>
  <span class="ruby-identifier">from_index</span> = <span class="ruby-identifier">to_index</span> = <span class="ruby-value">0</span>
  <span class="ruby-identifier">operations</span> = []
  <span class="ruby-identifier">blocks</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">match_from_index</span>, <span class="ruby-identifier">match_to_index</span>, <span class="ruby-identifier">size</span><span class="ruby-operator">|</span>
    <span class="ruby-identifier">tag</span> = <span class="ruby-identifier">determine_tag</span>(<span class="ruby-identifier">from_index</span>, <span class="ruby-identifier">to_index</span>,
                        <span class="ruby-identifier">match_from_index</span>, <span class="ruby-identifier">match_to_index</span>)
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">tag</span> <span class="ruby-operator">!=</span> <span class="ruby-value">:equal</span>
      <span class="ruby-identifier">operations</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-identifier">tag</span>,
                     <span class="ruby-identifier">from_index</span>, <span class="ruby-identifier">match_from_index</span>,
                     <span class="ruby-identifier">to_index</span>, <span class="ruby-identifier">match_to_index</span>]
    <span class="ruby-keyword">end</span>

    <span class="ruby-identifier">from_index</span>, <span class="ruby-identifier">to_index</span> = <span class="ruby-identifier">match_from_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">size</span>, <span class="ruby-identifier">match_to_index</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">size</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">size</span> <span class="ruby-operator">&gt;</span> <span class="ruby-value">0</span>
      <span class="ruby-identifier">operations</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-value">:equal</span>,
                     <span class="ruby-identifier">match_from_index</span>, <span class="ruby-identifier">from_index</span>,
                     <span class="ruby-identifier">match_to_index</span>, <span class="ruby-identifier">to_index</span>]
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">operations</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-compute_ratio" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">compute_ratio</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="compute_ratio-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 219</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">compute_ratio</span>
  <span class="ruby-identifier">matches</span> = <span class="ruby-identifier">blocks</span>.<span class="ruby-identifier">inject</span>(<span class="ruby-value">0</span>) {<span class="ruby-operator">|</span><span class="ruby-identifier">result</span>, <span class="ruby-identifier">block</span><span class="ruby-operator">|</span> <span class="ruby-identifier">result</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">block</span>[<span class="ruby-value">-1</span>]}
  <span class="ruby-identifier">length</span> = <span class="ruby-ivar">@from</span>.<span class="ruby-identifier">length</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@to</span>.<span class="ruby-identifier">length</span>
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">length</span>.<span class="ruby-identifier">zero?</span>
    <span class="ruby-value">1.0</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-value">2.0</span> <span class="ruby-operator">*</span> <span class="ruby-identifier">matches</span> <span class="ruby-operator">/</span> <span class="ruby-identifier">length</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-determine_tag" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">determine_tag</span><span
                                class="method-args">(from_index, to_index, match_from_index, match_to_index)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="determine_tag-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 229</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">determine_tag</span>(<span class="ruby-identifier">from_index</span>, <span class="ruby-identifier">to_index</span>,
                  <span class="ruby-identifier">match_from_index</span>, <span class="ruby-identifier">match_to_index</span>)
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">from_index</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">match_from_index</span> <span class="ruby-keyword">and</span> <span class="ruby-identifier">to_index</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">match_to_index</span>
    <span class="ruby-value">:replace</span>
  <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">from_index</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">match_from_index</span>
    <span class="ruby-value">:delete</span>
  <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">to_index</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">match_to_index</span>
    <span class="ruby-value">:insert</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-value">:equal</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-expand_edge_equal_operations-21" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">expand_edge_equal_operations!</span><span
                                class="method-args">(_operations, context_size)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="expand_edge_equal_operations-21-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 242</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">expand_edge_equal_operations!</span>(<span class="ruby-identifier">_operations</span>, <span class="ruby-identifier">context_size</span>)
  <span class="ruby-identifier">tag</span>, <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span> = <span class="ruby-identifier">_operations</span>[<span class="ruby-value">0</span>]
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">tag</span> <span class="ruby-operator">==</span> <span class="ruby-value">:equal</span>
    <span class="ruby-identifier">_operations</span>[<span class="ruby-value">0</span>] = [<span class="ruby-identifier">tag</span>,
                      [<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">max</span>,
                      <span class="ruby-identifier">from_end</span>,
                      [<span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">max</span>,
                      <span class="ruby-identifier">to_end</span>]
  <span class="ruby-keyword">end</span>

  <span class="ruby-identifier">tag</span>, <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span> = <span class="ruby-identifier">_operations</span>[<span class="ruby-value">-1</span>]
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">tag</span> <span class="ruby-operator">==</span> <span class="ruby-value">:equal</span>
    <span class="ruby-identifier">_operations</span>[<span class="ruby-value">-1</span>] = [<span class="ruby-identifier">tag</span>,
                       <span class="ruby-identifier">from_start</span>,
                       [<span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">from_start</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">min</span>,
                       <span class="ruby-identifier">to_start</span>,
                       [<span class="ruby-identifier">to_end</span>, <span class="ruby-identifier">to_start</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">context_size</span>].<span class="ruby-identifier">min</span>]
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-find_best_match_position" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">find_best_match_position</span><span
                                class="method-args">(from_start, from_end, to_start, to_end)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="find_best_match_position-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 97</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">find_best_match_position</span>(<span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">from_end</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-identifier">to_end</span>)
  <span class="ruby-identifier">best_from</span>, <span class="ruby-identifier">best_to</span>, <span class="ruby-identifier">best_size</span> = <span class="ruby-identifier">from_start</span>, <span class="ruby-identifier">to_start</span>, <span class="ruby-value">0</span>
  <span class="ruby-identifier">sizes</span> = {}
  <span class="ruby-identifier">from_start</span>.<span class="ruby-identifier">upto</span>(<span class="ruby-identifier">from_end</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">from_index</span><span class="ruby-operator">|</span>
    <span class="ruby-identifier">_sizes</span> = {}
    (<span class="ruby-ivar">@to_indexes</span>[<span class="ruby-ivar">@from</span>[<span class="ruby-identifier">from_index</span>]] <span class="ruby-operator">||</span> []).<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">to_index</span><span class="ruby-operator">|</span>
      <span class="ruby-keyword">next</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">to_index</span> <span class="ruby-operator">&lt;</span> <span class="ruby-identifier">to_start</span>
      <span class="ruby-keyword">break</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">to_index</span> <span class="ruby-operator">&gt;</span> <span class="ruby-identifier">to_end</span>
      <span class="ruby-identifier">size</span> = <span class="ruby-identifier">_sizes</span>[<span class="ruby-identifier">to_index</span>] = (<span class="ruby-identifier">sizes</span>[<span class="ruby-identifier">to_index</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>] <span class="ruby-operator">||</span> <span class="ruby-value">0</span>) <span class="ruby-operator">+</span> <span class="ruby-value">1</span>
      <span class="ruby-keyword">if</span> <span class="ruby-identifier">size</span> <span class="ruby-operator">&gt;</span> <span class="ruby-identifier">best_size</span>
        <span class="ruby-identifier">best_from</span> = <span class="ruby-identifier">from_index</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">size</span> <span class="ruby-operator">+</span> <span class="ruby-value">1</span>
        <span class="ruby-identifier">best_to</span> = <span class="ruby-identifier">to_index</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">size</span> <span class="ruby-operator">+</span> <span class="ruby-value">1</span>
        <span class="ruby-identifier">best_size</span> = <span class="ruby-identifier">size</span>
      <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">end</span>
    <span class="ruby-identifier">sizes</span> = <span class="ruby-identifier">_sizes</span>
  <span class="ruby-keyword">end</span>
  [<span class="ruby-identifier">best_from</span>, <span class="ruby-identifier">best_to</span>, <span class="ruby-identifier">best_size</span>]
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-matches" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">matches</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="matches-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 143</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">matches</span>
  <span class="ruby-ivar">@matches</span> <span class="ruby-operator">||=</span> <span class="ruby-identifier">compute_matches</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-update_to_indexes" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">update_to_indexes</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="update_to_indexes-source">
            <pre><span class="ruby-comment"># File test-unit-3.6.1/lib/test/unit/diff.rb, line 74</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">update_to_indexes</span>
  <span class="ruby-ivar">@to_indexes</span> = {}
  <span class="ruby-ivar">@junks</span> = {}
  <span class="ruby-keyword">if</span> <span class="ruby-ivar">@to</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">String</span>)
    <span class="ruby-identifier">each</span> = <span class="ruby-string">&quot; &quot;</span>[<span class="ruby-value">0</span>].<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Integer</span>) <span class="ruby-operator">?</span> <span class="ruby-value">:each_byte</span> <span class="ruby-operator">:</span> <span class="ruby-value">:each_char</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-identifier">each</span> = <span class="ruby-value">:each</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-identifier">i</span> = <span class="ruby-value">0</span>
  <span class="ruby-ivar">@to</span>.<span class="ruby-identifier">__send__</span>(<span class="ruby-identifier">each</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span>
    <span class="ruby-ivar">@to_indexes</span>[<span class="ruby-identifier">item</span>] <span class="ruby-operator">||=</span> []
    <span class="ruby-ivar">@to_indexes</span>[<span class="ruby-identifier">item</span>] <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">i</span>
    <span class="ruby-identifier">i</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
  <span class="ruby-keyword">end</span>

  <span class="ruby-keyword">return</span> <span class="ruby-keyword">if</span> <span class="ruby-ivar">@junk_predicate</span>.<span class="ruby-identifier">nil?</span>
  <span class="ruby-ivar">@to_indexes</span> = <span class="ruby-ivar">@to_indexes</span>.<span class="ruby-identifier">reject</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span><span class="ruby-operator">|</span>
    <span class="ruby-identifier">junk</span> = <span class="ruby-ivar">@junk_predicate</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">key</span>)
    <span class="ruby-ivar">@junks</span>[<span class="ruby-identifier">key</span>] = <span class="ruby-keyword">true</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">junk</span>
    <span class="ruby-identifier">junk</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

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              </section>
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      cssDarkmode = "false";
      console.log("swapMode! Now set cookie to " + cssDarkmode);
      Cookies.set(cookieName, cssDarkmode);

    } else {
      console.log("We not have dark mode, set the css to dark ...");
      $('#rdoccss').attr("href", darkModeCsseHref);
      $('#cssSelect').text("Light mode");
      cssDarkmode = "true";
      console.log("swapMode! Now set cookie to " + cssDarkmode);
      Cookies.set(cookieName, cssDarkmode);

    }

    console.log("  --------------- ");
  }


const vueCssApp = new Vue({
el: '#menubar',
data: {
isDark: false
},
methods: {
toggleClass: function(event){
this.isDark = !this.isDark;
}
}
})

const vueApp = new Vue({
el: '#vapp',
data: { 
isOpen: true
},

mounted() {
this.handleResize();
this.manage_mob_classes();
window.addEventListener('resize', this.handleResize)
//this.isOpen !=  (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
},
destroyed() {
window.removeEventListener('resize', this.handleResize)
},
created() {
//manage_mob_classes();
},

methods : {
isMobile() {
  return (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
},

  handleResize() {
    if (!this.isMobile()) {
      this.isOpen = window.innerWidth > 800;
    }
  },

  manage_mob_classes() {
    if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
      $("nav").addClass("mob_nav");
      $("main").addClass("mob_main");
      $("#extraz").addClass("mob_extraz");
      $("#carbonads-container").addClass("mob_carbonads-container");
      this.isOpen  = false;
    } else {
      $("nav").removeClass("mob_nav") 
        $("main").removeClass("mob_main");
      $("#extraz").removeClass("mob_extraz");
      $("#carbonads-container").removeClass("mob_carbonads-container");
      this.isOpen  = true;
    }
  },

  toggleNav() {
    this.isOpen =! this.isOpen ;
    // alert("Toggle nav!");
    console.log("toggleNav() click: " + this.isOpen );
  }
}
})

$("#carbonads-container").append(ads);


$(function() {

    var darkmode = Cookies.get("darkmode");
    console.log("Document ready: " + darkmode);

    if ( darkmode  == "true" ) {
      $('#cssSelect').text("Light mode");
    } else {
      $('#cssSelect').text("Dark mode");
     }

    $('body').css('display','block');
    });

</script>

    
  </body> 
</html>

